Combine all the ingredients, except the honey & herbs, in a stainless-steel bowl. Cover, and let stand for 2-3 days
Place the mixture in a food processor along with the salt and honey and process for 1 to 2 minutes until the seeds are coarsely ground
Add the chopped herbs. Taste and adjust the honey and herbs as desired as the mustard ages
Storage: The mustard will keep for up to 6 months refrigerated, although it’s best if used within one month